Carole was, and she's not causing a divide; there's been tension from the start. There isn't even two sides - it's everyone for themselves.
Carole's probably typically associated with very upfront people, with the Respect Party and she herself is a political campaigner so that makes sense...and I guess for her to be in a house full of schemers just got to her.
I think she overreacted by cutting all ties with Nicky - but I don't think she will - they'll kiss and make up in a few days or less
But Nicky is a very hateful woman.